How do I update an Addon for 2.8
Unless you're comfortable reading and writing Python, you won't be able to do anything but wait for the addon creator to do it.

2.8 changed the API quite a bit, but this addon may or may not use the parts that changed. So updating the addon might be as easy as changing a few lines, or as difficult as a complete rewrite of several parts of the script.

Your best bet is to use it in 2.79 for now and link/append it in.